TLVH431AQDBZTG4

Overview

The TLVH431AQDBZTG4 is a low-voltage adjustable precision shunt regulator from Texas Instruments, designed for automotive and industrial applications. It operates within an input voltage range of up to 20 V and provides an adjustable output voltage up to 18 V. The device features an initial accuracy of 1% and a temperature coefficient of 138 PPM/C. It supports a maximum shunt current of 80 mA with a minimum operating current of 80 uA. The component functions reliably across a wide temperature range from -40 C to +125 C and is housed in a compact SOT-23-3 surface-mount package.

Feature Summary

• Adjustable precision shunt regulation topology suitable for low-voltage circuits
• Automotive-grade reliability with extended temperature operation capabilities
• Compact three-terminal surface-mount packaging for space-constrained designs

Applications

• Low-voltage reference standards in automotive electronic control units
• Precision voltage monitoring and threshold detection circuits
• Feedback loop compensation in switching power supplies

Procurement Notes

Verify the specific suffix G4 indicates lead-free compliance and RoHS status as per manufacturer documentation. Confirm the SOT-23-3 package variant matches the design footprint requirements. Ensure the 1% initial accuracy specification aligns with system tolerance needs. Check for any specific automotive qualification certifications required by the end application. Validate that the 80 mA maximum shunt current capability meets the circuit load demands.

Selection Notes

Select this component when a low-voltage adjustable reference is required with high thermal stability. The 138 PPM/C temperature coefficient ensures consistent performance across the specified industrial temperature range. Compare against standard TL431 variants if higher input voltage tolerance or different accuracy grades are needed. Consider the SOT-23-3 form factor for board space optimization. Verify compatibility with the target operating current range between 80 uA and 80 mA.

Part Context

This part belongs to the TLVH431A series of low-voltage adjustable precision shunt regulators. It serves as a specialized alternative to traditional TL431 devices, optimized for lower voltage operations and automotive environments. The family offers various accuracy grades and package options, with this specific model providing a balance of precision and robustness for demanding electronic systems.

Replacement Considerations

The TLVH431AQDBZT is a related variant within the same product line. Verify pinout compatibility and electrical specifications before substitution. Ensure the replacement maintains the required automotive grade and temperature range.